Drawing-pen nib, more particularly for fountain pens



Filed Jan. 17, 1921 DRAWING PEN NIB, MORE PARTICULARLY FOR FOUNTAIN PENS Lw ,l 2 4 1 10 fa y@ ,fm 7

' June 3U, 1925.

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Patented Julie 3o, 1925.

"UNI-TED. STATES 1,544,161 11.11'11-2N'r nifl-flor..A

THEODOR KOVACS, 0F BERLIN, GERMANY.

DRAWING-PEN NIB, MORE PABTICUL'ARLY ron FoUNrAIN rnNs.

Application filed January 17, 1921. Serial No. 437,874. i

To all whom t may concern.'

Be it known that I, 'IHnonon- KovAos, a citizen of Hungary, residing at 108 Lindenstrasse, Berlin, SW., Germany, have invented new and useful Improvements in Drawing-Pen Nibs, More Particularlyfor Fountain Pens, of which the`following is a specification.

This invention relates to drawing-pen, nibs, which are more particularly intended for use in connection with reservoir or fountain pens. In reservoir or fountain pens, it is "usual for the nib to be split longitudinally to permit the flow of ink, these nibs being suitable for ordinary writing in which the varying pressure during the f up and down strokes is utilized, but such nibs are not suitable for drawing purposesin which a uniform flow of ink is necessary in order that the lines may be of uniform thickness throughout.

According to the present invention, the drawing-pen nib is not split longitudinally, but is perforated to permit the passage or flow of ink from the inner to the outer sur face of the pen, from whence the ink is fed by capillary means along the outer surface of the nib to the point thereof.

In order that the invention may be more clearly understood, reference is hereinafter made to the accompanying drawings, illustrating various forms of the improved drawing-pen nib by way of example Fig. l is a vertical section of the lower part of a fountain pen having a detachable drawing-pen nib according to one form of the present invention.

Fig. 2 is a front view of the nib.

Fig. 3 is a transverse section taken on the line 3 3 of Fig. 2.

Fig. 4L is a fragmentary vertical section corresponding to Fig. 1 showing a slightly modified form of nib suitable for producing block characters.

Fig. 5 is a front view of the nib shown in Fig. 4 with the covering member g removed.

Fig. 6 is a fragmentary section taken on the line 6 6 of Fig. 5.

Fig. 7 is a view corresponding to Fig. l showing a tubular pointed nib, and

Fig. 8 is a front view of the tubular pointed nib with pin lo removed.

Referring to Figs. l, 2 and 3 of the drawings, the penv nib is shown. detachably mounted in a holder 7L having a reduced.

portion or neclr a. The shank f1 of the nib f bears against the reduced portion ay and has a rib or ro'ection '2 which en agesA in an annular recess al in the reduced portion a and thus secures the-nib against axial displacement. The nib is held in position on the reduced portion a by a thimble `or ring ZJ. The tapered outlet end of the reduced portion a is adapted to receive the ink' feed member c having the ink-feed channels c2 which terminates in an outlet orifice (l through which the inlr is supplied to the nib f. The latter is perforated yat e to permit the flow of ink to the outer surface of the nib, the latter being covered by a cover plate or member g having spacing elements or projections g1 and g2 which bear against the outer surface of the nib and provide a narrow space or capillary chamber z' which extends over the perforation c and up to the point of the nib. Inorder to admit `air to the interior of the ink feed member o, the cover plate g is'curved at g3 so as to uncover anair hole f3 in the nibrf,

the air entering the ink feed `member c through the aperture c1 which may form a continuation of the aperture d.

The capillary chamber e' feeds theinlr to the writing surface or point of the nib quite independent of the movement: of the pen.

As more clearly seen in Fig. 2, the writing surface or point of the nib may be notched or interrupted at m to prevent the nib from squeezing the ink before it. In order to determine the length of the writing surface of the nib and to prevent leakage of the ink at the sides of the nib, the lateral edges of the nib may be turned substantially at right angles at f4, as more clearly seen from Fig. 3. The outwardly bent lateral edges f4 of the nib may extend some distance upwardly so as to provide lineal guiding means for the nib.

In the construction illustrated in Figs. 4 to 6, the nib is particularly intended for producing block characters. In this case the nib f is similarly provided with a perforation e and cover plate g forming a capillary chamber z'. The writing portion or point of the nib f5 is of flat or disc shape disposed at an angle to the shank of the nib and provided with notches f6 and a perforation f7 so that the ink will flow back again from the outer surface of the nibto the innerV surface thereof, atlthe point of the nib. The cover plate g is preferably shaped to suit the inclined disc-shaped sur face f5 of the nibv and the nib f may be formed with a lateral projection fs adapted to serve as a lineal guide. Marking or writing is done with the flat surface'f9.

Figs. 7 and 8 illustrateV a (tubular, pointe nib fwhich is similarlyprovided 'witha perforation e whereby the ink flows from the innerto the outer surface of the nib.v I1n- Vmediatelybeneath the perforated portion of the nib is providedV a tubular portionI or point i which may be fitted with a pin or its equivalent c sov as to forni a capillary vchamber z' between the pin In and the tubular portion T.' Thev inlr -will then fiow through the capillary chamber i fromthe perforation e and be fed to the point of the nib by capillary action. Marking is done with the fiat surfacesp'VV f j., The nib as .illustrated in Figs. 7 is particularlyfsuitable for producing thick` lines, butfforfiner lines the pink may be dispensed with and the tubular portionnr constructed to'constitute a capillary chamber in itself;

luIn a fountain dra-wing penin combina-r tionjan ink reservoir, means for detachably holding by its shank, an unslotted pen nib having a perforation therein, l means for feeding ink from the reservoir through the perforation 'to the outside of the pen,.and

capillary means for conveying inkfrom the perforation to the point of the nib.

2. A drawing pen nib for fountain pens comprising an unslotted member with a shaft for detachably fastening itv to an ink reservoir and having va perforation' above the point thereof and a capillary feeding means on thefoutside thereofbetween the point and the perforation.4 f

3. A vdrawing pen nib for fountain pens comprisingl Ya pointed member having a perforationA above the point thereof and a secondperforation above the first, a capillary feed means on the outside of the nib extending from the first mentioned perforation. to the point, and means for admit ting air to said second perforation. ff.V A drawing pen nib for fountain pens comprising a pointe-d "member having a perforation above the point thereof and `a second Vperfo-ration above the first, and a strip onjthe outside o f the nib covering both said perforations, the strip being disposed close to the nib betweenthe point and the rst. perforation to` provide aj capillary feed,"and being bent awayfrom the nib over the-second perforation to allow free access ofair thereto y 1 I 5. A drawing pen nib terminating in an inclined writing surface icomprising a .fiat portion fdisposed at an angle to' the `nib and formed with ink passages therein, the nib having a perforation atl a distance from the writing surface, and. capillary feeding means on the vouter side ofthe nib, extending from lthe perforation to the writing surface and being parallelto said surface. A

6. In a- 'writing and drawing instrument, a fountain ink reservoir serving as a han'- dle and a detachably Varranged unslotted pen beingshaped with a shaft'as an ordinary writing pen and having an opening for the passage of ink from the reservoir to the upper surface of the pen, and capillary'means onl said upper' surface to convey said opening to the writingpoint.

. VTanionor. KovAos.

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